What would be the exponent if you put the number 0.00427 into scientific notation?

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120